EP3212719B1 - Fouling control coating compostion comprising a polymer containing silyl ester groups, and a polymer comprising quaternary ammonium/phosphonium sulphonate groups - Google Patents

Fouling control coating compostion comprising a polymer containing silyl ester groups, and a polymer comprising quaternary ammonium/phosphonium sulphonate groups Download PDF

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Publication number
EP3212719B1
EP3212719B1 EP15784714.6A EP15784714A EP3212719B1 EP 3212719 B1 EP3212719 B1 EP 3212719B1 EP 15784714 A EP15784714 A EP 15784714A EP 3212719 B1 EP3212719 B1 EP 3212719B1
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polymer
coating composition
control coating
fouling control
meth
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German (de)
English (en)
French (fr)
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EP3212719A1 (en
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Richard Mark Ramsden
Paul BASSARAB
Clayton Price
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Akzo Nobel Coatings International BV
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Akzo Nobel Coatings International BV
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
    • C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
    • C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
    • C08F230/085—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon the monomer being a polymerisable silane, e.g. (meth)acryloyloxy trialkoxy silanes or vinyl trialkoxysilanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662—Synthetic film-forming substance
    • C09D5/1668—Vinyl-type polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/24—Homopolymers or copolymers of amides or imides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
    • C09D143/04—Homopolymers or copolymers of monomers containing silicon
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/10—Block or graft copolymers containing polysiloxane sequences
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
    • C09D5/1637—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
    • C09D5/1637—Macromolecular compounds
    • C09D5/165—Macromolecular compounds containing hydrolysable groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C08F220/1811—C10or C11-(Meth)acrylate, e.g. isodecyl (meth)acrylate, isobornyl (meth)acrylate or 2-naphthyl (meth)acrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Definitions

  • This invention relates to a fouling control coating composition, especially for marine applications, a method of protection of a man-made structure immersed in water and a substrate or structure coated with the fouling control coating composition.
  • Man-made structures such as boat hulls, buoys, drilling platforms, oil production rigs, and pipes which are immersed in water are prone to fouling by aquatic organisms such as green and brown algae, barnacles, mussels, and the like.
  • aquatic organisms such as green and brown algae, barnacles, mussels, and the like.
  • Such structures are commonly of metal, but may also comprise other structural materials such as concrete.
  • This fouling is a nuisance on boat hulls, because it increases frictional resistance during movement through the water, the consequence being reduced speeds and increased fuel costs.
  • It is a nuisance on static structures such as the legs of drilling platforms and oil production rigs, firstly because the resistance of thick layers of fouling to waves and currents can cause unpredictable and potentially dangerous stresses in the structure, and, secondly, because fouling makes it difficult to inspect the structure for defects such as stress cracking and corrosion.
  • fouling control paint for instance as a top coat on ships' hulls, to inhibit the settlement and growth of marine organisms such as barnacles and algae, generally by release of a biocide for the marine organisms.
  • fouling control paints have comprised a relatively inert binder with a biocidal pigment that is leached from the paint.
  • binders which have been used are vinyl resins and rosin.
  • Vinyl resins are seawater-insoluble and paints based on them use a high pigment concentration so as to have contact between the pigment particles to ensure leaching.
  • Rosin is a hard brittle resin that is very slightly soluble in seawater.
  • Rosin-based fouling control paints have been referred to as soluble matrix or eroding paints.
  • the biocidal pigment is very gradually leached out of the matrix of rosin binder in use, leaving a skeletal matrix of rosin, which becomes washed off the hull surface to allow leaching of the biocidal pigment from deep within the paint film.
  • a polymer comprising quaternary ammonium/phosphonium groups capped with an acid is an example of a binder polymer comprising blocked functional groups of which the blocking groups can be hydrolysed, dissociated or exchanged with seawater species, the polymer framework that remains becoming soluble or dispersible in seawater as a result, of which said blocking groups are of low toxicity, preferably non-biocidal.
  • WO2004/018533 describes a fouling control coating composition comprising polymer containing quaternary ammonium groups capped with a conjugate base of a carboxylic acid (i.e. the quaternary ammonium groups are capped with a monoester carbonate anion).
  • Polymers containing silyl ester groups are also known for use in self-polishing fouling control paint systems and are described in WO 00/77102 A1 , US 4,593,055 , US 5,436,284 and WO2005005516 . None of these documents teach to prepare a fouling control coating composition comprising a polymer comprising silyl ester groups and polymer comprising a sulphonic acid-capped quaternary ammonium/phosphonium polymer.
  • the coating composition of the present invention requires both a sulphonic acid-capped quaternary ammonium/phosphonium polymer and a polymer comprising silyl ester groups. Surprisingly, the inventors have found that coatings comprising a blend of these polymers have a superior fouling control performance compared to coatings comprising just one of these types of polymers.
  • the fouling control coating of the present invention remains stable, and has high integrity, i.e. show almost no cracking and a good adhesion, particularly when applied to those parts of a vessel where the coating is alternately wet and dry, for instance at the waterline. Additionally, the coating composition of the present invention shows a sufficiently short drying time. More in particular, the coating composition of the invention has an improved balance of fast drying after application and stability during storage.
  • the present invention relates to a fouling control coating composition
  • a fouling control coating composition comprising an ingredient having biocidal properties for aquatic organisms and
  • the fouling control coating composition of the present invention may be formulated so that it has a VOC of less than 400g/l and a high shear viscosity of less than 20 poise at 25°C.
  • VOC level of a composition can be measured according to EPA reference method 24 in conjunction with ASTM standard D 3960-02 or calculated in accordance with ASTM standard D 5201-01. Both methods lead to similar results.
  • EPA reference method 24 in conjunction with ASTM standard D 3960-02 or calculated in accordance with ASTM standard D 5201-01. Both methods lead to similar results.
  • the conjugate base of the sulphonic acid has an aliphatic, aromatic, or alkaryl hydrocarbyl group comprising 6 or more carbon atoms.
  • the polymer comprising silyl ester groups (a2) may have a weight-average molecular weight of less than 70,000.
  • the polymer comprising silyl ester groups (a2) may have a weight-average molecular weight of greater than 10,000 and less than 70,000.
  • the weight-average molecular weight of polymer (a1) and polymer (a2) is measurable by GPC (gel permeation chromatography) and is calculated as an absolute molecular weight.
  • the absolute molecular weight may be obtained from GPC by the triple detection approach, using light scattering, viscometer and concentration detectors in combination.
  • GPC of the polymer (a1) may conveniently be performed using hexafluoroisopropanol (HFiP) as solvent.
  • the polydispersity can also be determined by GPC.
  • the weight ratio of polymer (a1):polymer (a2) in the fouling control coating composition may range from 1:20 to 20:1, preferably from 1:4 to 4:1, preferably from 3:1 to 1:3, and most preferably from 65:35 to 35:65.
  • the polymer (a1) and/or the polymer (a2) may be (meth)acrylic polymers.
  • (meth)acrylic polymer we mean a polymer obtainable by polymerisation of acrylic acid, methacrylic acid, or a salt, ester, amide or nitrile derivative thereof, optionally with one or more other vinyl polymerisable monomers.
  • a (meth)acrylic polymer is most typically a polymer obtainable by polymerisation of an acrylic acid ester monomer (an "acrylate monomer") and/or a methacrylic acid ester monomer (a "methacrylate monomer”), and optionally one or more other vinyl polymerisable monomers.
  • Polymer (a1) may therefore be a (meth)acrylic polymer comprising side chains having thereon quaternary ammonium groups and/or quaternary phosphonium groups, said quaternary ammonium groups and/or quaternary phosphonium groups being neutralised by a conjugate base of a sulphonic acid having an aliphatic, aromatic, or alkaryl hydrocarbyl group.
  • Polymer (a2) may therefore be a (meth)acrylic polymer comprising side chains having thereon a silyl ester group.
  • Polymer (a1) is obtainable by polymerisation of a monomer of Formula (I), optionally with one or more monomers comprising one or more olefinic double bonds (“vinyl polymerisable monomers”)
  • the counter-ion (i.e. X - ) of polymer (a1) may be a conjugate base of a sulphonic acid comprising 6 to 50 carbon atoms.
  • the polymer comprising silyl ester groups (a2) preferably comprises at least one side chain bearing at least one terminal group of the Formula (II): wherein A is divalent -C(O)- or -S(O) 2 O- group, n is 0 or an integer of 1 to 50, and R 1 , R 2 , R 3 , R 4 , and R 5 are each independently selected from the group consisting of optionally substituted C 1-20 -alkyl, optionally substituted C 1-20 -alkoxy, optionally substituted C 1-20 aryl, and optionally substituted C 1-20 aryloxy.
  • Polymer (a2) may be a (meth)acrylic polymer comprising side chains according to Formula (II).
  • the fouling control coating composition may further comprise a rosin material and/or a non-hydrolysing, water-insoluble film-forming polymer (a3).
  • the non-hydrolysing, water-insoluble film-forming polymer (a3) may be an acrylate ester polymer or a vinyl ether polymer.
  • the fouling control coating composition may have a solids content of at least 55 weight %.
  • the invention further relates to a method of protecting a man-made structure immersed in water from fouling by applying the fouling control coating composition as defined herein to the man-made structure, allowing the fouling control coating composition to form a coating and then immersing the coated man-made structure in water.
  • man-made structures are boat hulls, buoys, drilling platforms, oil production rigs, and pipes.
  • the invention further relates to a substrate or structure coated with the fouling control coating composition as described herein.
  • the fouling control coating composition comprises a polymer comprising quaternary ammonium groups and/or quaternary phosphonium groups bound to the backbone of the polymer, said quaternary ammonium groups and/or quaternary phosphonium groups being neutralised by a conjugate base of a sulphonic acid having an aliphatic, aromatic, or alkaryl hydrocarbyl group.
  • This polymer may be referred herein as a sulphonic acid-capped quaternary ammonium/phosphonium polymer.
  • the sulphonic acid-capped quaternary ammonium/phosphonium polymer (a1) preferably has a weight-average molecular weight of more than 10,000.
  • the weight-average molecular weight of polymer (a1) may be more than 10,000, and less than 90,000.
  • ammonium groups/phosphonium groups are typically located on side chains pendant to the backbone of the polymer.
  • the conjugate base of the sulphonic acid comprises an aliphatic, aromatic, or alkaryl hydrocarbyl group (preferably aliphatic) and comprises 6 or more carbon atoms.
  • Such sulphonic acid-capped ammonium/phosphonium polymers are obtainable by the following process comprising the steps of:
  • Quaternisation of the amine- or phosphine-functional monomer of Formula (III) [Step 1] can be performed by reacting the monomer of Formula (III) with a dialkyl carbonate wherein each alkyl group is independently a C 1 -C 5 alkyl group.
  • the dialkyl carbonate may be for example dimethyl carbonate, ethylmethyl carbonate, diethyl carbonate, or dipropyl carbonate. Most preferred is dimethyl carbonate.
  • reaction conditions can be as described in EP-A-291 074 for the quaternisation of a tertiary amine R x R y R z N wherein R x , R y , and R z represent hydrocarbon residues.
  • the amine-functional monomer of Formula (III) and the dialkyl carbonate can be used in a mol ratio of from 0.2 to 5.
  • the reaction can take place in the presence or absence of a solvent, at a reaction temperature of from 20°C to 200°C.
  • the reaction is performed at a temperature of from 115°C to 135°C in the presence of an alcohol, preferably methanol, under an increased pressure of about 90 psi to100 psi (6.1 10 5 Pa to 6.8 10 5 Pa).
  • an alcohol preferably methanol
  • the replacement of the carbonate counter-ion of the ammonium/phosphonium monomer [Step 2] can be performed using a sulphonic acid having an aliphatic, aromatic, or alkaryl hydrocarbon group.
  • the hydrocarbon group of the sulphonic acid comprises 6 or more carbon atoms, more preferably 8 or more carbon atoms.
  • the hydrocarbon group of the sulphonic acid preferably comprises up to 50 carbon atoms, even more preferably up to 30 carbon atoms, and most preferably up to 20 carbon atoms.
  • the polymerisation of the sulphonic acid-capped quaternary ammonium/phosphonium-functional monomer [Step 3] can be performed by reacting the sulphonic acid-capped quaternary ammonium/phosphonium-functional monomer with one or more vinyl polymerisable monomers (a vinyl polymerisable monomer is a monomer having one or more olefinic double bonds).
  • Polymer (a1) is therefore obtainable by polymerising a sulphonic acid-capped quaternary ammonium/phosphonium-functional monomer (which may have a structure according to Formula (I)) with one or more vinyl polymerisable monomers.
  • vinyl polymerisable monomers include (meth)acrylate esters such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, 2-hydroxyethyl methacrylate, and methoxyethyl methacrylate; maleic acid esters such as dimethyl maleate and diethyl maleate; fumaric acid esters such as dimethyl fumarate and diethyl fumarate; styrene, vinyl toluene, ⁇ -methyl-styrene, vinyl chloride, vinyl acetate, butadiene, acrylamide, acrylonitrile, methacrylic acid, acrylic acid, isobornyl methacrylate, maleic acid, and mixtures thereof.
  • (meth)acrylate esters such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, 2-hydroxyeth
  • the one or more vinyl polymerisable monomers comprises an ester of (meth)acrylic acid with an alcohol bearing 4 or more carbon atoms.
  • suitable esters of (meth)acrylic acid with an alcohol bearing 4 or more carbon atom include n-butyl (meth)acrylate, iso-butyl (meth)acrylate, tert-butyl (meth)acrylate, n-pentyl (meth)acrylate, iso-pentyl (meth)acrylate, neo-pentyl (meth)acrylate, n-hexyl (meth)acrylate, iso-hexyl (meth)acrylate, cyclohexyl (meth)acrylate, benzyl (meth)acrylate, phenyl (meth)acrylate, ethylhexyl (meth)acrylate, octyl (meth)acrylate, bornyl (meth)acrylate, and isoborny
  • Polymer (a1) is therefore obtainable by polymerising the sulphonic acid-capped quaternary ammonium/phosphonium-functional monomer with at least butyl (meth)acrylate or isobornyl (meth)acrylate.
  • Such monomers are relatively hydrophobic. It is possible to adjust the polishing rate of the coating by using a mixture of a hydrophobic and a hydrophilic (meth)acrylate monomers.
  • Polymer (a1) is therefore obtainable by polymerising the sulphonic acid-capped quaternary ammonium/phosphonium-functional monomer with a mixture of hydrophobic and hydrophilic (meth)acrylate monomers.
  • the sulphonic acid-capped ammonium/phosphonium polymer is alternatively obtainable by reaction of a polymer containing quaternary ammonium groups/phosphonium groups capped with a monoester carbonate anion, with a sulphonic acid having an aliphatic, aromatic, or alkaryl hydrocarbon group.
  • the hydrocarbon group comprises 6 or more carbon atoms.
  • the rate at which the paint according to the current invention dissolves or erodes in seawater can be adjusted by the structure of the blocking groups, substantially without problems related to the toxicity of the released groups.
  • the blocking groups comprise anionic residues of one or more acids having an aliphatic hydrocarbon group comprising 6 to 50 carbon atoms, more preferably 6 to 20 carbon atoms.
  • the vinyl polymerisable monomers may be prepared by reacting an ester or amide of an alkyl, alkoxyalkyl, carbocylic or heterocyclic alcohol or amine with an unsaturated carboxylic acid, such as methyl acrylate or methacrylate, butyl acrylate or methacrylate, isobutyl acrylate or methacrylate, and isobornyl acrylate or methacrylate.
  • the polymer comprising silyl ester groups (a2) preferably has a weight-average molecular weight of more than 10,000.
  • the weight-average molecular weight of polymer (a2) is more than 20,000, and less than 70,000.
  • Polymer (a2) preferably has a polydispersity of more than 1.1; the polydispersity preferably is less than 3.0, even more preferably less than 2.8.
  • more than 10 per cent by weight, even more preferably more than 30 per cent by weight, and highly preferably more than 40 per cent by weight of the monomers forming said polymer (a2) when polymerised provide side chains with silyl ester functionality.
  • less than 70 per cent by weight, even more preferably less than 60 per cent by weight of the monomers forming said polymer (a2) when polymerised provide side chains with silyl ester functionality.
  • the polymer comprising silyl ester groups (a2) preferably comprises at least one side chain bearing at least one terminal group of the Formula (II):
  • C 1-20 -alkyl represents straight, branched, and cyclic hydrocarbon groups having from 1 to 20 carbon atoms, such as methyl, ethyl, propyl, isopropyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, pentyl, hexyl, cyclohexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tertadecyl, hexadecyl, octadecyl, and icosyl.
  • substituted C 1-20 -alkoxy means C 1-20 -alkyl oxy, such as methoxy, ethoxy, propoxy, isopropoxy, n-butoxy, iso-butoxy, sec-butoxy, tert-butoxy, pentoxy, hexoxy, cyclohexoxy, heptoxy, octoxy, nonoxy, decoxy, undecoxy, dodecoxy, tertadecoxy, hexadecoxy, octadecoxy, and ocosoxy.
  • aryl is to be understood to mean an aromatic carbocyclic ring or ring system, such as phenyl, naphthyl, biphenyl, and xylyl.
  • substituents may, for example, be hydroxy, alkyl, hydroxyalkyl, alkyl-carbonyloxy, carboxy, alkoxycarbonyl, alkoxy, alkenyloxy, oxo, alkylcarbonyl, aryl, amino, alkylamino, carbamoyl, alkylaminocarbonyl, aminoalkylaminocarbonyl, aminoalkylaminocarbonyl, alkylcarbonylamine, cyano, guanidino, carbamido, alkanoyloxy, sulphono, alkylsulphonyloxy, nitro, sulphanyl, alkylthio, and halogen.
  • a polymer comprising silyl ester groups (a2) is obtainable by polymerising (i) one or more vinyl polymerisable monomers with (ii) one or more monomers comprising silyl ester groups and one or more olefinic double bonds.
  • vinyl polymerisable monomers that can be used to prepare polymer (a2) are essentially the same as the vinyl polymerisable monomers that can be used to prepare polymer (a1) and include, for example, (meth)acrylic polymers such as methacrylic acid, acrylic acid, (meth)acrylate esters such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, n-butyl (meth)acrylate, iso-butyl (meth)acrylate, tert-butyl (meth)acrylate, n-pentyl (meth)acrylate, iso-pentyl (meth)acrylate, neo-pentyl (meth)acrylate, n-hexyl (meth)acrylate, iso-hexyl (meth)acrylate, cyclohexyl (meth)acrylate, benzyl (meth)acrylate
  • (meth)acrylate, octyl (meth)acrylate, bornyl (meth)acrylate, and isobornyl (meth)acrylate, methoxy ethyl (meth)acrylate or a higher polyethylene oxide derivative, such as ethoxy ethyl (meth)acrylate, propoxyethyl(meth)acrylate, butoxyethyl (meth)acrylate, 2-hydroxyethyl methacrylate, a polyoxyethylene glycol monoalkyl ether (meth)acrylate, such as polyoxyethylene (n 8) glycol monomethyl ether methacrylate; maleic acid and maleic acid esters such as dimethyl maleate and diethyl maleate; fumaric acid and fumaric acid esters such as dimethyl fumarate and diethyl fumarate; styrene; vinyl toluene; ⁇ -methyl-styrene; vinyl chloride; vinyl acetate; butadiene; acrylamide;
  • Suitable monomers comprising silyl ester groups and one or more olefinic double bonds include monomers according to Formula (V):
  • the preparation of the monomers of Formula (V) can, for example, be performed according to the methods described in EP 0 297 505 or according to the methods described in EP 1 273 589 and the references cited therein.
  • the polymer comprising silyl ester groups may therefore be a (meth)acrylic polymer comprising silyl ester groups.
  • the monomers comprising silyl ester groups and one or more olefinic double bonds may be one of the following: trimethylsilyl (meth)acrylate, triethylsilyl (meth)acrylate, tri-n-propylsilyl (meth)acrylate, triisopropylsilyl (meth)acrylate, tri-n-butylsilyl (meth)acrylate, triisobutylsilyl (meth)acrylate, tri-tert-butylsilyl (meth)acrylate, tri-n-amylsilyl (meth)acrylate, tri-n-hexylsilyl (meth)acrylate, tri-n-octylsilyl (meth)acrylate, tri-n-dodecylsilyl (meth)acrylate, triphenylsilyl (meth)acrylate, tri-p-methylphenylsilyl (meth)acrylate, tribenzylsilyl (
  • the polymer comprising silyl ester groups (a2) is prepared from at least one of triisopropylsilyl (meth)acrylate, tributylsilyl (meth)acrylate, or triisobutylsilyl (meth)acrylate monomers.
  • the reaction temperature at which the polymer comprising silyl ester groups (a2)is prepared has an influence on the molecular weight of the polymer.
  • the molecular weight can additionally or alternatively also be adjusted by the amount of initiator used and/or by adding a change transfer agent, e.g. a thiol.
  • the type of initiator influences the degree of polydispersity.
  • the polydispersity may be lowered by choosing an azo-initiator, e.g. azobisisobutyronitrile or azobis-methylbutyronitrile.
  • the solvent in which the reaction takes place can be adjusted to adjust the molecular weight of the polymer and its polydispersity.
  • the viscosity of the polymer comprising silyl ester groups solution and/or the coating composition can be adjusted by adjusting the molecular weight of the polymer and/or by adjusting its polydispersity, and/or by adjusting the solids content.
  • the fouling control coating composition may comprise further resins which are seawater-reactive and/or slightly soluble or water-sensitive in seawater.
  • These other resin(s) can form up to 50 weight per cent of the total weight of the coating composition.
  • the coating composition may optionally comprise further seawater-reactive polymers.
  • a seawater-reactive, acid-functional film-forming polymer the acid groups of which are blocked may be a polymer having at least one side chain bearing at least one terminal group of the formula: -X-[-O-M-R] n
  • Such a hydrolysable polymer preferably is an acrylic polymer wherein X represents M is copper, and R represents The parent acrylic polymer having a -COOH group instead of -X-[O-M-R] n preferably has an acid value of 25-350 mg KOH/g. Most preferably, the hydrolysable polymer has a copper content of 0.3-20 weight per cent and R1 is the residue of a high boiling organic monobasic acid.
  • Such hydrolysable polymers can be prepared by the processes disclosed in EP 0 204 456 and EP 0 342 276 .
  • the copper-containing film-forming polymer preferably is a polymer comprising an acrylic or methacrylic ester the alcohol residue of which includes a bulky hydrocarbon radical or a soft segment, for example a branched alkyl ester having 4 or more carbon atoms or a cycloalkyl ester having 6 or more atoms, a polyalkylene glycol monoacrylate or monomethacrylate optionally having a terminal alkyl ether group or an adduct of 2-hydroxyethyl acrylate or methacrylate with caprolactone, as described in EP 0 779 304 .
  • such a seawater-reactive, acid-functional film-forming polymer the acid groups of which are blocked may be a carboxylic acid-functional polymer.
  • it may be a polymer of acrylic or methacrylic acid with one or more alkyl acrylates or methacrylates, at least some of the acid groups of which have been converted to groups of the formula -COO-M-OH, wherein M is a divalent metal such as copper, zinc, calcium, magnesium or iron, as described in GB 2,311,070 .
  • a polymer that is a salt of an amine is a salt of an amine.
  • it is a salt of an amine containing at least one aliphatic hydrocarbon group having 8 to 25 carbon atoms and an acid-functional film-forming polymer as described in EP 0 529 693
  • the acid-functional polymer preferably being an addition polymer of an olefinically unsaturated carboxylic acid, sulphonic acid, acid sulphate ester, phosphonic acid or acid phosphate ester and at least one olefinically unsaturated co-monomer, the unsaturated carboxylic acid for example being acrylic or methacrylic acid, the unsaturated sulphonic acid for example being 2-acrylamido-2-methylpropane sulphonic acid (AMPS), and the film-forming polymer preferably being an amine sulphonate polymer containing units of an organocyclic ester as described in
  • the coating composition may optionally comprise further resins that are slightly soluble or water-sensitive in seawater.
  • suitable polymers or resins that are slightly soluble or water-sensitive in seawater the following compounds may be mentioned: vinyl ether polymer, for example a poly(vinyl alkyl ether), such as polyvinyl methyl ether, polyvinyl ethyl ether, polyvinyl propyl ether and polyvinyl isobutyl ether, or a polymer of a vinyl alkyl ether with vinyl acetate or vinyl chloride; alkyd resins, modified alkyd resins; polyurethanes; saturated polyester resins; poly-N-vinyl pyrollidones; epoxy polymers; epoxy esters; epoxy urethanes; linseed oil, castor oil, soybean oil and derivatives of such oils; acrylate ester polymers such as a homopolymer or polymer of one or more alkyl acrylates or methacrylates which preferably contain 1 to 6 carbon
  • Such a rosin material preferably is rosin, particularly wood rosin or alternatively tall rosin or gum rosin.
  • the main chemical constituent of rosin is abietic acid.
  • the rosin can be any of the grades sold commercially, preferably that sold as WW (water white) rosin.
  • the rosin material can alternatively be a rosin derivative, for example a maleinised or fumarised rosin, hydrogenated rosin, formylated rosin or polymerised rosin, or a rosin metal salt such as calcium, magnesium, copper or zinc rosinate.
  • Additives that can be added to the fouling control coating composition include, reinforcing agents, stabilisers, thixotropes or thickening agents, plasticisers, liquid carriers and non-biocidal pigments.
  • the fibres have an average length of 25 to 2,000 microns and an average thickness of 1 to 50 microns with a ratio between the average length and the average thickness of at least 5.
  • suitable stabiliser agents are moisture scavengers, zeolites, aliphatic or aromatic amines such as dehydroabietylamine, tetraethylorthosilicate, and triethyl orthoformate.
  • Suitable thixotropes or thickening agents are silicas, bentones, and polyamide waxes.
  • Suitable non-polymeric plasticisers are phthalate esters such as dibutyl phthalate, butyl benzyl phthalate or dioctyl phthalate, phosphate triesters such as tricresyl or tris(isopropyl)phenyl phosphate, or chlorinated paraffins, and sulphonamides such as N-substituted toluene sulphonamide.
  • phthalate esters such as dibutyl phthalate, butyl benzyl phthalate or dioctyl phthalate
  • phosphate triesters such as tricresyl or tris(isopropyl)phenyl phosphate
  • chlorinated paraffins or chlorinated paraffins
  • sulphonamides such as N-substituted toluene sulphonamide.
  • Such a plasticiser can for example be present in the coating composition at up to 50% by weight, most preferably at least
  • suitable liquid carriers are organic solvents, organic non-solvents, and water.
  • organic solvents are an aromatic hydrocarbon such as xylene, toluene or trimethyl benzene, an alcohol such as n-butanol, an ether alcohol such as butoxyethanol or methoxypropanol, an ester such as butyl acetate or isoamyl acetate, an ether-ester such as ethoxyethyl acetate or methoxypropyl acetate, a ketone such as methyl isobutyl ketone or methyl isoamyl ketone, an aliphatic hydrocarbon such as white spirit, or a mixture of two or more of these solvents.
  • the coating can be water-based; for example, it can be based on an aqueous dispersion.
  • non-biocidal pigments examples include slightly seawater-soluble non-biocides such as zinc oxide and barium sulphate and seawater-insoluble non-biocides such as fillers and colouring pigments, e.g., titanium dioxide, ferric oxide, phthalocyanine compounds, and azo pigments.
  • slightly seawater-soluble non-biocides such as zinc oxide and barium sulphate
  • seawater-insoluble non-biocides such as fillers and colouring pigments, e.g., titanium dioxide, ferric oxide, phthalocyanine compounds, and azo pigments.
  • Such highly insoluble pigments are preferably used at less than 60% by weight of the total pigment component of the paint, most preferably less than 40%.
  • the coating composition may have a pigment volume concentration of 30 to 60%.
  • the ingredient having biocidal properties for aquatic organisms is the ingredient having biocidal properties for aquatic organisms
  • the ingredient having marine biocidal properties usually is a biocide for aquatic organisms. This biocide can be mixed with the polymers using conventional paint-blending techniques. When the ingredient having marine biocidal properties is a pigment, it can be all or part of the pigment of the paint.
  • the biocide of the present invention can be one or more of an inorganic, organometallic, metal-organic or organic biocide for marine or freshwater organisms.
  • inorganic biocides include copper metal and copper salts such as copper oxide, copper thiocyanate, copper bronze, copper carbonate, copper chloride, copper nickel alloys, and silver salts such as silver chloride or nitrate;
  • organometallic and metal-organic biocides include zinc pyrithione (the zinc salt of 2-pyridinethiol-1-oxide), copper pyrithione, bis (N-cyclohexyl-diazenium dioxy) copper, zinc ethylene-bis(dithiocarbamate) (i.e.
  • organic biocides include formaldehyde, dodecylguanidine monohydrochloride, thiabendazole, N-trihalomethyl thiophthalimides, trihalomethyl thiosulphamides, N-aryl maleimides such as N-(2,4,6-trichlorophenyl) maleimide, 3-(3,4-dichlorophenyl)-1,1-dimethylurea(diuron),2,3,5,6-tetrachloro-4-(methylsulphonyl) pyridine, 2-methylthio-4-butylamino-6-cyclopopylamino-s-triazine, 3-benzo[b]thien-yl-5,6-dihydro-1,4,2-oxathiazine 4-oxide, 4,5-d
  • an inorganic biocide is a biocide whose chemical structure comprises a metal atom and which is free of carbon atoms;
  • an organometallic biocide is a biocide whose chemical structure comprises a metal atom, a carbon atom, and a metal-carbon bond;
  • a metal-organic biocide is a biocide whose chemical structure comprises a metal atom, a carbon atom, and which is free of metal-carbon bonds;
  • an organic biocide is biocide whose chemical structure comprises a carbon atom and which is free of metal atoms.
  • biocide may optionally be wholly or partially encapsulated, adsorbed or supported or bound. Certain biocides are difficult or hazardous to handle and are advantageously used in an encapsulated or absorbed or supported or bound form. Additionally, encapsulation, absorption or support or binding of the biocide can provide a secondary mechanism for controlling biocide leaching rate from the coating system in order to achieve an even more gradual release and long lasting effect.
  • the method of encapsulation, adsorption or support or binding of the biocide is not particularly limiting for the present invention.
  • Examples of ways in which an encapsulated biocide may be prepared for use in the present invention include mono and dual walled amino-formaldehyde or hydrolysed polyvinyl acetate-phenolic resin capsules or microcapsules as described in EP1791424 .
  • an absorbed or supported or bound biocide may be prepared include the use of host-guest complexes such as clathrates as described in EP0709358 , phenolic resins as described in EP0880892 , carbon-based adsorbents such as those described in EP1142477 , or inorganic microporous carriers such as the amorphous silicas, amorphous aluminas, pseudoboehmites or zeolites described in EP1115282 .
  • host-guest complexes such as clathrates as described in EP0709358 , phenolic resins as described in EP0880892 , carbon-based adsorbents such as those described in EP1142477 , or inorganic microporous carriers such as the amorphous silicas, amorphous aluminas, pseudoboehmites or zeolites described in EP1115282 .
  • the sulphonic acid-capped quaternised monomer was prepared in the following manner: Dimethylaminopropyl methacrylamide (192.1 g), dimethylcarbonate (179.6 g) and methanol (208 g), were placed in a stainless steel, high pressure reaction vessel. The sealed vessel was heated to 125 °C for 4 hours. The cooled solution was filtered and dried in vacuo after addition of methanol (150 g).
  • the resulting viscous amber liquid consisting substantially of the corresponding alkyltrimethyl ammonium carbonate (244.7 g)
  • xylene 200 g
  • xylene 200 g
  • Paint formulation of Example 3 is according to the invention. Paint formulation of Examples 4 and 5 are comparative Examples since they only contain one of the two types of polymers.
  • Example 4 (comparative Example)
  • Example 5 (comparative Example) pbw pbw pbw Polymer solution 1 (a1) of Example 1 Film Former 25 50 0 Polymer solution 2 (a2) of Example 2 Film Former 27 0 53 Iron oxide (Bayferrox 130BM) Pigment 6.3 6.3 6.3 Copper pyrithione (Lonza) Biocide 2 2 Zinc Oxide (Larvik) Pigment 4.3 4.3 4.3 Cuprous oxide (American Chemet) Biocide 30 30 30 30 Polyamide wax (Disparlon A600-020X, Kusomoto Chemicals) Thixotrope 1.8 1.8 1.8 Xylene Solvent 4.7 6.5 3.1
  • Example 3 The anti-fouling (fouling control) performance of paint formulation of Example 3 and comparative paint formulations of Examples 4 and 5 were compared by applying the formulations to 60 x 60 cm marine plywood panels by roller to give a dry film thickness of about 150 microns.
  • the boards had been pre-primed with Interprotect epoxy primer (International Paint Ltd). Each coating was allowed to cure fully under ambient conditions before the start of testing.
  • Test panels were simultaneously immersed in waters at Hartlepool (UK) and also simultaneously immersed in natural tropical marine waters at a depth of 0.54 to 1.0 m in Changi, Singapore where growth is known to be severe. The panels were periodically removed from the water to be photographed and the extent of fouling on the coatings was assessed prior to re-immersion of the panels.
  • Total % coverage of fouling Location Example 3
  • Example 4 Example 5 Hartlepool (10 weeks) 89% 95% 94% Singapore (15 weeks) 19% 33% 37%
  • example 3 In both the UK and Singapore waters, the coatings formed from example 3 according to the invention exhibited less fouling than the comparative coatings formed from examples 4 and 5.
  • Example 6 Preparation of a polymer comprising quaternary ammonium groups neutralised by a conjugate base of a carboxylic acid (a3)
  • the carboxylic acid-capped quaternised monomer was prepared following the general procedure described in Example 1 for the preparation of the sulphonic acid-capped quaternised monomer, except that the sulphonic acid, dodecylbenzenesulphonic acid, was replaced on an equimolar basis by a carboxylic acid, palmitic acid, to provide a solution of the carboxylic acid-capped quaternised monomer in xylene.
  • the carboxylic acid-capped quaternised monomer was then polymerised following the general procedure described Example 1 for the preparation of Polymer solution 1 (a1), except that the sulphonic acid-capped quaternised monomer was replaced on an equimolar basis by the carboxylic acid-capped quaternised monomer to provide Polymer solution 3.
  • Example 8 The following materials were mixed in the stated % by weight using a high speed disperser to form copper containing fouling control paints of Examples 8 and 9.
  • the paint formulation of Example 8 is according to the invention.
  • the paint formulation of Example 9 is a comparative example where the polymer comprising quaternary ammonium groups neutralised by a conjugate base of a sulphonic acid used in Example 8 has been replaced by the polymer comprising quaternary ammonium groups neutralised by a conjugate base of a carboxylic acid.
  • Example 9 (comparative Example) Wt% Wt% Polymer solution 1 (a1) of Example 1 Film Former 12.4 0 Polymer solution 3 (a3) of Example 6 Film Former 0 11.8 Polymer solution 4 (a4) of Example 7 Film Former 14.8 14.8 Diisononyl phthalate (ExxonMobil) Plasticiser 2.3 2.3 Carbon black (Lampblack 101, Orion Engineered Carbon) Pigment 2.3 2.3 Copper pyrithione (Lonza) Biocide 6.6 6.6 Zinc Oxide (Larvik) Pigment 12.4 12.4 Cuprous oxide (American Chemet) Biocide 40.6 40.6 AntiTerra 203 (BYK-Chemie) Thixotrope 0.3 0.3 Butanol Solvent 8.3 8.9
  • Example 8 The paint formulation prepared in Example 8 and the comparative Example 9 were applied to glass strips 25 mm wide, 300 mm long and 3 mm thick using a cube applicator with a 300 micrometre nominal gap size.
  • the drying times were determined using a BK Drying Recorder at ambient room temperature following the procedure described in ASTM D 5895-13: Measuring Times of Drying or Curing During Film Formation of Organic Coatings Using Mechanical Recorders.
  • Example 8 Example 9 Dry-through time 100 minutes 160 minutes
  • the coatings formed from example 8 exhibited faster through-drying than the coatings formed from comparative example 9.
  • Example 8 The storage stability of the paint formulations prepared in Example 8 and comparative Example 9 was assessed by periodically measuring the viscosity of the paints. Viscosity measurements were measured at 20 °C using a Sheen Viscomaster CP1 cone and plate viscometer. Paints were stored at ambient room temperature in sealed paint cans between viscosity measurements. Example 8 Example 9 Viscosity when manufactured 5 poise 5 poise Viscosity after 14 days 5 poise gel

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EP15784714.6A 2014-10-28 2015-10-26 Fouling control coating compostion comprising a polymer containing silyl ester groups, and a polymer comprising quaternary ammonium/phosphonium sulphonate groups Active EP3212719B1 (en)

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WO2016066567A1 (en) * 2014-10-28 2016-05-06 Akzo Nobel Coatings International B.V. A fouling control compositon comprising a polymer comprising silyl ester functional groups and quaternary ammonium/phosphonium groups
DK3724277T3 (da) * 2017-12-14 2022-01-24 Akzo Nobel Coatings Int Bv Underlag, belagt med et coatingsystem i flere lag, og fremgangsmåde til kontrol af akvatisk biobegroning på menneskeskabte objekter ved anvendelse af et sådan coatingsystem i flere lag
CN112105697A (zh) * 2018-05-11 2020-12-18 中国涂料株式会社 防污涂料组合物、防污涂膜、带有防污涂膜的基材和防污方法
CN113292921A (zh) * 2021-05-26 2021-08-24 广东电网有限责任公司 一种复合绝缘子涂料、制备方法及喷涂工艺

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MY177689A (en) 2020-09-23
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US20170355861A1 (en) 2017-12-14
DK3212719T3 (da) 2019-06-03
EP3212719A1 (en) 2017-09-06
MX2017005298A (es) 2017-07-28
CN107075279B (zh) 2021-07-02
AU2015340747A1 (en) 2017-04-20
TR201909251T4 (tr) 2019-07-22
WO2016066566A1 (en) 2016-05-06
KR102003420B1 (ko) 2019-07-24
ZA201702304B (en) 2019-06-26
TW201617418A (zh) 2016-05-16
BR112017007551B1 (pt) 2022-08-23
JP2017535637A (ja) 2017-11-30
BR112017007551A2 (pt) 2018-02-06
JP6387187B2 (ja) 2018-09-05
CN107075279A (zh) 2017-08-18
KR20170070204A (ko) 2017-06-21

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